Mechanical press



Nov. 6 1923.

HUMPHRIS MECHANICAL PRESS Filed oct. 24; 1921 s Sheets-Sheet 1 Nov. 6',1923. 1,473,478

F. HUM PHRIS MECHANI CAL PRES 5 Filed Oct- 24. 1921 3' Sheets-Sheet 2Fig.4. f

* 11 i: 1 J J (190 m I f 6 WrW Now 6 5 1923. 1,473,478

F. HUMPHRIS MECHANICAL PRESS Fil 001?- 24. 1921 v 3 Sheets-Sheet 5 In aFBI/9.2 w

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e a I b 1* lNl/ENTOR I for z y- Patented Nov, 6, 1923.

HALF TO KENNETH ALEXANDER ROBERTS, or LONDON, ENGLAND,"

; MECHANICAL rnnss.

Application filed October 24, 1921. Serial No. 509,994.

To all whom it may concern:

Be it known that I, TTRANK T-IUMrnRIaa' subject of the King of GreatBritain, residing at Boscombe, Bournemouth, l-lampshire, England, haveinvented new and useful Im provements in Mechanical Presses, of whichthe following is a specification;

This invention relate to a mechanical press for the manufacture ofhorseshoes orother articles and provides a press that is simple toconstruct and capable of exercising great pressure and in which themovable pressure face travels in true parallel. Backlash and excessivewear are reduced to a minimum in the members which take thecompressionload by so'constructing the apparatus that the sliding action on thehearing surfaces isvery small while the bearing area is very large.

The improved press difiers essentially as regarcs its design andconstruction from standard practice, as it does also in the selectionand placement of the principal mem bers or parts by and through whichthe pressure is exercised.

The invention is illustrated in the accompanying drawing, in whichFigure 1 is a front elevation of one type of single rain power-press ofthe type whichuses edge-pressureram-plates with the piv-" ots integralwith the bar or plates connect ing them. I s

Figure 2 is a perspective view on an cn-- larged scale of a solidedge-pressure-ramplate or of an edge-pressure-slide-plate having itspivots integral with the bar or plate connecting them.

Figure 3 is a perspective view, with some of the parts shown in sectionsof an edgepressure-ram plate not provided with pivots, but capped withhardened material on each hearing face and as an example of how itsbearing acts, it is shown standing in a broken piece of the ram, whichram has in its grooves liners of channel form, also this figure showstwo broken sectionsof the loeating and withdrawing plates in theircorrect position to accommodate the pivots of a plate of the kind shownin Figure 2.

Figure l is a part view, on a. reduced scale, of the front elevation ofthe machine shown in Figure 1, with the locating and withdrawing platesremoved to enable the action of the machine to be more clearlyunderstood. A

. V v, Figure 5 is a side elevational view, on an,

enlarged scale. of a-portion of an edgepressure-ramplate or the likepart shown in crosssection with its wedge-wise capthereon 1n itsrelative position shown in longltudinal section, together with itsbearer-plate, ram, i or like part containing a wear resisting liner withwedge-like face, both in longitudinal i section and in their-relativeworking posi tion to the other parts thereon, and the setscrews in sideelevation and in their 00-.

operating relative clamping position for adustment of the slidingwedge-formed parts.

Figure 6 is a. front elevation onan enlarged scale, of the same parts asshown in Figure 5.

Figure 7 is a' cross-sectional view, on an enlarged scale, of anedgepressure-ramplate, or the like part, with enlarged rounded-edges toincrease the bearing area Figure 8 is a cross-sectional view, on anenlarged scale, of an edgg-pressure-ramplate or like part made up 1nlaminar form from a number'of sheets or strips of ma terial or metal andcontaining as separate units in or on two or more of their edges(whether these are provided parallel, wedgewise, or tapering), roundedcapping or bearing faces with a reduced portion remote from saidbearing-faces which is: secured by rivets, screws, orwelding. i

I Figure 9 is a front elevation, partly section, of one type ofdouble-ram power press showing the relative position of removable partswhen the machine is fully open, the front locating and withdrawingplates being removed.

Like letters of reference refer to like parts throughout the drawings.

The novel features and essential parts, and around which thepress-machine forming the subject of this invention is designed tofunction, are what are herein referred to as theedge-pressure-ram-plates a or such other mechanical equivalentstherefor. and their direct concomitants. The action. of theseedge-pressureramplates a, which contain no joints to wear or becomeloose, are given a herring-bone or laminiform position of placement inthe machine in press in a single ram machine. This movement isaccomplished by means of a num berof edge-pressure-ram-plates a, ortheir equivalents. The rams or pressure platens b are constrained, whenin operation, in the double ram machine to approach one another by meansof the movement imparted to two or more sets of edge-pressure-ram-platesa, each set consisting of a minimum of two plates, one set of which,provided with rounded edges a, Figure 2, (/9, Figure 3. at one endengage in grooves b Figure 3 in that face of the ram remote from the diecarrying face thereof, and the opposite ends thereof are also providedwith rounded edges a or a which engage with and are fulcrumed in groovesprovided in a bearerplate or plates e, Figure 1, suitably attached tothe frame of the press f.

In any set of edgepressure-ramplates some of the ram plates may, asshown in Figure 2, lie-formed with pivots a adapter to extend into holesZ4 in locating and withdrawing plates 70, and some of the pressure ramplates may, as shown in Fig. 3, be formed without such pivots, theplates without pivots being conveniently interposed with those havingsuch pivots. The plates may be formed without holes k adjacent the endsof grooves 73 which receive plates without pivots, or the plates *7: maybe omitted or cut away adjacent the'ends of the grooves I) which receiveplates without pivots. For example, the end r m plates of a set may beprovided with pivots and the intermediate plates may be formed withoutsuch pivots. The plates with pivots, in addition to functioning aspressure plates, also serve as links to connect the rams and bearerplates.

The grooves Z) in the pressure-platens or rams band the grooves c Figurel, provided in the bearer plates 6 and also the grooves 9' provided inthe reciprocating bearer-plateg are each contained in or on a separateattachable part or unit piece it, Figure 6 (when the machine is employedfor heavy service), which part or parts is or are in the formofwear-resisting anti-friction liners or blocks composed of hardenedsteel, bronze or other suitable material, said liners or blocks 7L beingprovided on their faces remote from those engaging with theedge-pressureram-plate with wedge-wise faces h and, when constrained bymeans of set-screws or their equivalent 7L2, are capable of movinglongitudinally and in such a manner as to act in conjunction withwedge-wise and grooved faces provided on or in the pressure-platens orrams Z), the bearer-plates e, the reciprocating bearer-plate g, or suchother like part. and thus take up any wear or inequality of distancethat may exist between the rounded faces of the edge-pressure-ramplatesa or the like part and also enable the U169 apart of thebearing-surfaces thereof in each case to be equalized or adjusted. Vhere no provision for adjustment is necessary, i. e.. for like serviceno liners or blocks it will be employed. but for medium servicerenewable channel liners 72 of hardened material as shown in Figure 3will be used. a

The rounded or bearingends of the edge-pressure-ram-plates or likeconstructed parts a Figure 9, when required for heavy ervice, areprovided with separate attachable parts or units (suitably affixedthereon 'n slides, or by screws or, the like so that th can be e ilyrenewed) either in the fo "-1 of wear resisting wedge-wisecaps of uigure 6, or rounded or channelled bearingends 0?, in each case made ofhardened steel or other suitable material and, in the case'of thewedge-wise caps afl capable of longitudinal adjustment in a mannersimilar to that employed for the liners or blocks 72.

The edge-pressure-ram-plates a or like constructed parts s may be madein one piece, or they may be capped with hardened material asbeforementioned, but preferably they will be constructed in laminar formfrom two or a number of plates of metal a as shown in Figure 8, saidplates being made with parallel or wedge-wise edges adjacent to theircapped ends a which are provided with reduced parts a for attaching tothe plates which are made to suit either a parallel or a wedgewise formof capping as required.

In the edge-pressure-ram-plates as shown in cross-section in Figure 7,the section may be described as of dumb-bell form; this be ing providedto give an increased bearingarea or sliding surface in contact, andisespecially adaptable for high speed operation of the press. The sectionmay be constructed in various ways and is given merely by way ofexample.

When the pressure platens or rams have approached each other to theirnearest position or in other words, when the press is closed, theedge-pressure-ramplates are vertical or at right angles to thebearer-plates and the pressure faces of the platens or rams. Theoperating means causing this be forementioned condition to occur in thedouble ram machine are composed of edgepressure-slide plates acting uponthe face of oneend of each pressure-platen or ram in amanner similar,but in th1s case at right angles to the edge-pressure-ram-plates.

These edgepressureslide-plates s engage,

and connected at the other end by means of abearing 6 to a connectingrod 1 or its equivalent, which in turn is connected to the crank p ofthe machine, the crank-shaft p of which carries a flywheel 0, andsuitable clutch motion as ordinarily employed; or the closing andopening of the pressure platens or, rains I) may be accomplished bymeans of any equivalent mechanical device. Locatingland with-drawingplates is having the holes are provided for locating the pivots a andthe bearing faces a or the like in the grooves 12', e, g or the like inthe rams b, and the bearer plates 6 and g orthe like, and serve inconjunction with the pivots a of the edge pressure ram plates a or thelike, as means for opening or with= drawing the ram faces from theirclosed position, the edge pressure ram plates'with pivots (i serving aslinks for holding the pressure platens or rams Z) in their correctworking positions. Said plates is are secured to the bearer plates e, gand the rain Z) or like parts by screws k or the like.

Preferably the repetition operation. of a double-ram machine briefly isas follows An article is placed between the faces of thepressure-platensor rams (b, c, Figure 1, or 6, Z), Figure 9), and thenthe motion controlling the rams is made operative, which in the casewhere a constantly revolving flywheel 0 is used, is done by causing theclutch to engage, and this in turn revolves the crankshaft p and causesreciprocation of the connecting-rod '9", which operates on the edgeofthe pressure platen or ram Z) either directly (Figure 1) or on thepressure platens or rams b Figure 9) indirectly through the beam t,slide 8' and slide plates 8, (causing them in a vertical machine to movein a horizontal. path) and these rains Z) are constrained to close bymeans of the edge-pressure-ram-plates a controlling them, and by sodoing apply great force to ma terial interposed between the pressureplatens or ram faces; when this is done the pressure-platens or ramsautomatically return to their full open position and the operation canbe immediately repeated at the will or convenience of the operator. 7

In the single-ram type of machine as shown in Figure 1 where the bottomdie:

member 02 is secured to the bed or bolster 0 of the press-frame f,provision is made through saiddie-member n and the bed or bolster c,byproviding a passage-way for outcuttings or the like produced by thedies when the press is" in operation to fall through, and suchpassage-way opens out into cavity 03 in the frame f. In this machinewhen in operation, theram or pre's' sure-platen b is constrained toapproach I the bed or bolster 0 ofthe press by means of movementimparted to two or more sets of edge-pressure ram-plates a, each setconsistin'g of two or more plates a, and said plates aare all providedon their hearing ends with "rounded edg'es a, one set thereof eachattheir'one'end a en a e and are;

fulcrumed in grooves b in that face "of the ram 5 remote from the diecarrying-. facev thereof, and ea-ch at their other end" a engage "withand are fulcrumed in" grooves g in a reclprocating bearer-plate g, whichplate 9 in the single-ram press" is interposed between two sets ofedge-pres sure-ram-plates a; the second set thereof, each at their oneend a, engage and are fulcrumed'in grooves g in thebeforementionedreciprocating bearer-plate and each attheir other end aengage and are fulcrumed in grooves e in a bearer plate 6.

When this press is in operation, the fly wheel 0 causes thecrankshaft pto revolve, which constrains the connectingrod r to impart movement tothe reciprocating bearer-plate g which in turn causes theedge-pressure-ram plates to assume a ver-' tical path or arrive at rightangles, or approximately so, to the plane of the bed or bolster c, andin so doing these plates a cause the ram 6, which is constrained by itsside blocks in the guides to approach the bed or holster 0 ofthepress,'and in so doing exercise pressure on whatever material maybeplaced between said ram 6 and bolster 0.

By increasing or varying the throw of the crank 39 so as to cause theedge-pressure ram-plates a to pass the right-angle-line above referredto, in relation to the bed or bolster c of the press, two power strokesor pressure deliveries instead of one for each revolution of the crank72 will be the resultant condition obtained.

The same press can he made to have a continuous motion in which aregular reciprocating movement is 'given to the pressure platens orrams, and when this is done, hotforging, hot stamping, thicknessing and.other similar work can be accomplished, in addition to using the machinefor ordinary press work,

By aflixing suitable dies on the ram and the bolster parts of themachine, horseshoes and a large variety of other articles can be easilyhot-stamped, cold-pressed and die-finished'in the same machine, which,by its adjusting devices can be set to give either aslow continuingpressure, a blow, or an intermittent movement.

I claim 1. In a mechanical press, a ram, a bearer late ed e ressure ramalates havin rounded ends and of which the length substantially equalsthe width of the ram and bearer plate, said ram and bearer plate havingcorrespondingly rounded seats for the respective ends of the edgepressure ram plates extending from side to side of the caps on thepressure edges of the said edge pressure ram plates, and wear resistingliners arranged to form seats for the pressure edges of the edgepressure ram plates in the ram and bearer plate respectively.

3. In a mechanical press, a ram, a bearer plate, edge pressure ramplates between the said ram and bearer plate, wear resisting caps on thepressure edges of the said edge pressure ram plates, means fordetachably securing the said caps to the said plates, and seats for thesaid caps in the ram and bearer plate respectively.

4:. In a mechanical press, a ram, a bearer plate, edge pressure ramplates between the said ram and bearer plate, wear resisting linersarranged to form seats for the pressure edges of the edge pressure ramplates in the ram and in the bearer plate, and means for detachablysecuring the said liners to the ram and bearer plate respectively.

5. In a mechanical press, a ram, a bearer plate, edge pressure ramplates extending from side to side of the ram and bearer plate, taperedwear-resisting caps, the edges of the edge pressure ram plates beinginclined to the sides thereof to serve as slide faces for accommodatingsaid tapered wearresisting caps, and tapered wear-resisting liners, theram and bearer plate having grooves inclined to the plane faces thereofto serve as slide faces for accommodating said tapered wear-resistingliners.

6. In a mechanical press, a ram, a bearer plate, edge pressure ramplates extending from side to side of the ram and bearer plate,wear-resisting caps tapered wedgewlse and serving as pressure edges ofthe edge pressure ram plates and wear resisting liners taperedwedge-wise and serving as seats in which the pressure edges of theedgepressure ram plates in the ram and bearer plate move respectively.

7 In a mechanical press,,a mm, a bearer plate, edge pressure ram platesextending from side to side of the ram and bearer bearer plate move"respectively, and means I for separately longitudinally adjusting thetaperedcaps and linersI 8. In a mechanical press,.the combination ofamovable ram guided to move parallel to itself between its extreme openand closed positions, a bearer plate, a plurality of edge pressure ramplates extending from side to side of the said ram andbearer plate, saidedge pressure ram plates having rounded pressure edges, correspondinglyrounded seats in the said ram and bearer plate for therespective roundedpressure edges of the edge pressure ram plates, withdrawing plates,trunnioned edge pressure ram plates, and a reciprocatory slide operatingin a direction substantially at right angles to the direction ofmovement of the ram to and from its open and closed positions, saidslide operating in conjunction with said withdrawing plates and.trunnioned edge pressure ram plates to effect movement of the ram andbearer plate.

9. In a mechanical press, a mm, a bearer plate, edge pressure ram plateshaving trunnions, withdrawing plates having hearings to receive saidtrunnions, and other edge pressure rain plates without trunnions.

10. In a mechanical press, a ram, a bearer plate, edge pressure ramplates extending be tween the said, rain and bearer plate, the said edgepressure ram plates comprisin a plurality of plates secured together ancarrying rounded end caps, and seats in the ram and bearer plate for thesaid end caps.

FRANK HUMPHRIS.

Witnesses:

GEORGE HARRISON, CHARLES F. MURPHY.

